IMHO.

Free games like Castle survival

Below are 8 free-to-play Steam games similar to Castle survival, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Castle survival page.

Ranked picks

  1. 1
    Landfall Archives — Steam game cover

    Landfall Archives

    Free-to-play alternative to Castle survival — no purchase or trial window. Shares Indie with Castle survival.

    Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!

    2023ActionStrategyIndieFreeFree to playSimilar games →
  2. 2
    Bloons TD Battles — Steam game cover

    Bloons TD Battles

    Free-to-play alternative to Castle survival — no purchase or trial window.

    Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.

    2016ActionStrategyFree To PlayFreeDeck PlayableFree to playSimilar games →
  3. 3
    Kingdom: Classic — Steam game cover

    Kingdom: Classic

    Free-to-play alternative to Castle survival — no purchase or trial window. Shares Indie with Castle survival.

    Kingdom is a 2D sidescrolling strategy/resource management hybrid with a minimalist feel wrapped in a beautiful, modern pixel art aesthetic.

    2015StrategyIndieSimulationFreeDeck VerifiedFree to playSimilar games →
  4. 4
    Shakes and Fidget — Steam game cover

    Shakes and Fidget

    Free-to-play alternative to Castle survival — no purchase or trial window. Shares Indie with Castle survival.

    Shakes & Fidget is a hilarious fantasy role-playing satire and at the same time, an award-winning RPG! Sounds crazy? With over 50 million enthusiastic players, it ranks among the most celebrated online role-playing games worldwide!

    2016StrategyIndieAdventureFreeDeck PlayableFree to playSimilar games →
  5. 5
    Yet Another Zombie Defense — Steam game cover

    Yet Another Zombie Defense

    Free-to-play alternative to Castle survival — no purchase or trial window. Shares Indie with Castle survival.

    Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.

    2014ActionStrategyIndieFreeFree to playSimilar games →
  6. 6
    King Arthur's Gold — Steam game cover

    King Arthur's Gold

    Free-to-play alternative to Castle survival — no purchase or trial window. Shares Indie with Castle survival.

    Would you enjoy building CASTLES, traps and siege machines in MULTIPLAYER? And then undermine your opponents castle and collapse it with 2D PHYSICS & DESTRUCTION?

    2013ActionIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
  7. 7
    Battle for Wesnoth — Steam game cover

    Battle for Wesnoth

    Free-to-play alternative to Castle survival — no purchase or trial window. Shares Indie with Castle survival.

    The Battle for Wesnoth is an open source, turn-based strategy game with a high fantasy theme. Explore the four corners of Irdya in seventeen solo campaigns and dozens of multiplayer maps, taking part in countless adventures as you go.

    2018StrategyIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
  8. 8
    Soda Dungeon 2 — Steam game cover

    Soda Dungeon 2

    Free-to-play alternative to Castle survival — no purchase or trial window. Shares Indie with Castle survival.

    Everyone’s favorite laid-back dungeon crawler returns in Soda Dungeon 2. Featuring a new adventure, a whole town to upgrade, crafting, new classes, alternate dimensions, and more! It’s everything you loved about the original plus all the stuff you’ve been asking for.

    2020IndieRPGFree To PlayFreeDeck PlayableFree to playSimilar games →